Astronomy Tools & Data
Real-time sky data, lunar calculators, and observation tools for stargazers, astrophotographers, and anyone who looks up. No sign-up, no downloads — just point your telescope in the right direction.
Astronomy Tools & Data
Terminator Calculator
Real-time shadow map showing the day/night line and visible craters.
Moon Phase Calendar
Exact New, First Quarter, Full, and Last Quarter dates for every month, with eclipses and meteor showers included.
Moonlight Calculator
Calculate lunar luminosity (Lux) based on weather and altitude.
Northern Lights Forecast
Real-time Northern Lights tracker, Kp-Index data, and visibility maps.
Moonrise Tonight
Live moonrise and moonset times for your city, with real-time altitude, azimuth, phase, and sky position.
Sky Clarity
Real-time stargazing grade based on local cloud cover and lunar glare.
Moon Radar Compass
Use your device’s live telemetry to find the Moon’s exact position in the sky.
Planetary Tracker
Live map of the solar system and upcoming planet parades.
ISS Tracker
Real-time tracking of the International Space Station’s location.
Conjunctions
Schedule of lunar occultations and planetary meet-ups for 2026.
Meteor Shower Calendar
Peak dates, ZHR, and live moon interference for every major shower, any year.
Lunar 100 Guide
The ultimate moon-watching list. Track 100 must-see lunar features.
Apollo Landing Sites
Interactive map coordinates of all historic Apollo mission landings.
Field of View Calc
Simulate telescope magnification and framing for specific targets.
Eyepiece Master Lab
Pro optical simulator and guide to help you choose the perfect eyepiece.
Moon Photography
Settings, gear, and professional tips for capturing sharp lunar shots.
Blue Hour
Precise blue and golden hour times for photographers and filmers.
Looney 11 Calc
Calculate optimal camera exposure settings for photographing the moon.
Moon Age Calc
Calculate the precise age of the moon in days since the last New Moon.
Distance Calculator
Measure real-time distances between Earth and celestial bodies.
Planetary Weight
Calculate how much you would weigh on Mars, Jupiter, or the Moon.
Age on Other Planets
Calculate your age if you lived on Mars, Jupiter, or the Moon.
Day Counter
Calculate the days, heartbeats, and moon cycles between any dates.
Julian Date
Astronomy date converter and local sidereal time calculator.
UTC & Zulu Time
Universal and sidereal time clocks for global coordination.
Military Time
Convert standard time to military time and vice versa.
Lunar Dictionary
Glossary of astronomical terms, lunar phases, and celestial mechanics.
What This Hub Is For
Every tool on this page pulls real-time or precisely calculated astronomical data — no guesswork, no static charts. Whether you’re planning a night of astrophotography or just wondering why the sky looks the way it does tonight, this is the control room.
Track the Moon
Phase, age, rise and set times, brightness, and its exact position in your sky — updated live using your location.
Map the Sky
Planetary positions, the ISS, conjunctions, and occultations, plotted so you know exactly where and when to look.
Shoot Better Photos
Exposure calculators, blue hour timing, and field-of-view tools built specifically for lunar and night photography.
Do the Math
Julian dates, sidereal time, planetary weight, and distance calculators — the reference tools astronomy actually runs on.
✨ Explore the Full Collection
Looking for something else? Access our complete suite of 30+ lunar calendars, astronomy calculators, and nature forecasts in the main directory.
View All Tools & Calculators →Frequently Asked Questions
Are these astronomy tools free to use?
Yes. Every calculator and tracker on this page is free, with no account, sign-up, or app download required.
Do the tools use my exact location?
Most tools — like Moonrise Tonight, Sky Clarity, and the Moon Compass — use your device’s location (with permission) to give results specific to where you’re standing, not just a nearby city.
How often is the data updated?
Real-time trackers such as the ISS Tracker, Planetary Tracker, and Northern Lights Forecast refresh continuously. Calendar-based tools like the Meteor Shower and Moon Phase calendars are calculated for any date you select, present or future.
I’m new to astrophotography — where should I start?
Start with the Moon Photography guide for camera settings, then use the Looney 11 Calculator to dial in exposure and the Blue Hour tool to time your session around the best light.
What’s the difference between the Terminator Calculator and Moon Phase Calendar?
The Terminator Calculator shows the live day/night shadow line on today’s Moon, ideal for spotting craters along the edge of light. The Moon Phase Calendar gives you exact phase dates across any month, including eclipses and meteor showers.
Can I use these tools without a telescope?
Absolutely. Tools like the Moon Compass, ISS Tracker, and Sky Clarity are useful for naked-eye and binocular observing. The Field of View and Eyepiece calculators are only needed once you’re working with a scope.